Photo: Larry D. Moore · CC BY 4.0Living in Hidalgo, TX: what to set up and who to call
An EPA health-based violation from 2024 is still open for City of Hidalgo Water System. Oncor delivers the power in Hidalgo, but in Texas’s open market you choose the company that sells it.
I’m new in town
What to set up in Hidalgo, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Hidalgo.
Power comes from Oncor
Oncor (Oncor Electric Delivery Co.), an investor-owned utility, serves all of Hidalgo.
Start or move service: oncor.com · (888) 875-6279
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Hidalgo Water System
City of Hidalgo Water System supplies Hidalgo: about 90% of residents live in its service area. About 10% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water (EPA lists Mcallen Public Utility and City of Pharr as sellers) and serves 14,800 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 83% of the 3,525 systems serving 10,001–50,000 people had none. 1 older violation is still open, since 2024: a lead and copper treatment requirement (Lead and Copper Rule Revisions), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 1.8 ppb, below the 15 ppb action level that applied. That’s higher than 62% of similar systems’ latest results.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. TX1080021.
7 home internet providers serve Hidalgo
98% of 4,137 addresses can get 100/20 Mbps; 6% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 94% | 1,000/35 |
| AT&T | DSL, Fixed wireless | 20% | 100/20 |
| Smartcom Telephone | Fiber | 6% | 5,000/5,000 |
| VTX1 | Fixed wireless | 87% | 400/50 |
| T-Mobile | Fixed wireless | 30% | 100/20 |
| TWIN | Fixed wireless | 24% | 400/100 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Hidalgo’s trash rules yet
Pickup rules, the dump and recycling in Hidalgo.
Where your child goes to school
Public school districts and the school path by grade.
Most of Hidalgo (59%) is in Valley View Independent School District; parts are in Hidalgo Independent School District (41%).
BSchool gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Hidalgo is in ZIP code 78557
ZIP codes where Hidalgo residents live, with the share of the town in each.
| ZIP | Post office name | Share of Hidalgo | ZIP’s residents in Hidalgo |
|---|---|---|---|
| 78557 | Hidalgo, TX | 100% | 100% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Hidalgo
Who supplies Hidalgo’s drinking water, and has it had violations?
City of Hidalgo Water System (EPA ID TX1080021). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 83% of systems its size had none. Its latest lead 90th percentile was 1.8 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Hidalgo?
Oncor (Oncor Electric Delivery Co.), an investor-owned utility.
What internet providers serve Hidalgo?
Spectrum, AT&T, Smartcom Telephone, VTX1, T-Mobile, TWIN (FCC, as of December 2025).
What ZIP codes are in Hidalgo?
78557. Census 2020 ZIP Code Tabulation Areas.
What school district is Hidalgo in?
Valley View Independent School District. Parts of the city are in Hidalgo Independent School District.
How do I register to vote in Hidalgo?
Texas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Hidalgo County Early Voting Clerk. Check your registration at teamrv-mvp.sos.texas.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.